MEMPHIS, Tenn. - As they continued to search for whoever killed four adults and two children, police refused to say Wednesday whether the slayings may be linked to one of the victims, who had a history of violent crime.

SUNNYVALE, Calif. - Yahoo Inc. has extended a deadline for nominating candidates to its board, giving the struggling Internet pioneer more time to search for a white knight to help it fight off an unwanted takeover bid from Microsoft Corp.

NEW YORK - One undercover detective made a disjointed 911 call after the fatal gunfire erupted. Once the street went quiet, two other detectives claimed they couldn't remember how many shots they'd fired. Another went totally blank - even though he'd squeezed off 31 rounds.

NEW YORK - This is a triumphant time for black women: Condoleezza Rice in the global diplomatic spotlight, Michelle Obama captivating campaign crowds as a potential first lady, billionaire Oprah Winfrey playing political kingmaker.

VIENNA, Austria - OPEC on Wednesday accused the U.S. of economic ''mismanagement'' that it said is pushing oil prices to record highs, rebuffing calls to boost output and laying blame at the feet of the Bush administration.

CARACAS, Venezuela - President Hugo Chavez said Wednesday that ''we want peace,'' but that Colombia and its allies in Washington represent war - and that perpetual conflict with the United States is inevitable.

MOSCOW - Russia's state-controlled gas monopoly Gazprom said Wednesday it was resuming full deliveries of natural gas to Ukraine after presidents of the tense neighbors helped reach an agreement that will ease European supply concerns.

BAGHDAD - Two former Health Ministry officials cleared of helping Shiite death squads celebrated their release with friends and family Wednesday while outraged Sunni politicians called it a black day that showed just how dysfunctional Iraq's judicial system is.

PAGE, Ariz. - Twin torrents of water unleashed from a dam coursed through the Grand Canyon on Wednesday in a flood meant to mimic the natural ones that used to nourish the gorge's ecosystem by spreading sediment.

WASHINGTON - President Bush said Wednesday that the United States has to ''get off oil'' to reduce dependence on foreign suppliers and declared ''it should be obvious'' that high demand is creating painful gasoline prices.